Last Train to Dawn

Infected apocalypse. Soldier Zane Kane caught on train, organizes survivors. He meets doctor Sloane Lennox, escorting Leo. Train blocked, group faces Infected. Companions sacrificed. Leo is key immune body for 'Project Zero Dawn'; they evade Reapers. Group endures situations. They reach 'Polaris' institute, facing self-destruction and Reapers' siege. Military arrives. They escort Leo and antibody data to Dawnlight Base, preserving hope.